On Mon, May 7, 2018 at 2:09 AM, Vladimir Ozerov <voze...@gridgain.com> wrote:
> Hi Dima, > > Update with indexes would definitely be slower than update without them. > The question is how much slower. For now the slowdown comes mostly from > excessive data page reads ([1] and [2] in my previous email) leading to > page evictions and additional IO. To the contrast, usually only a single > page write is needed to update an index. Correct index implementation ([1] > and [2] from previous email) would eliminate data page reads altogether and > should give dramatic speedup. > Sounds great. The changes you are suggesting should give us a great performance boost. Hopefully they should not take too long to implement. Regardless, once you are done, we should still perform a benchmark with persistence indexes vs memory-only indexes. If memory-only will be more than 20% faster, we should still implement it. D.
